Packing-box.



Patented Nov. 6, I900.

R. THOMPSON.

PACKING BOX.

(Application filed Aug. 18,1900.

(No Model.)

I WW 4%yw Waug A n V W v h j 4 I inn ROBERT THOMPSON, OF I-IOL YOKE,MASSACHUSETTS.

PACKING-BOX.

smcmwms forming part of Letters Patent No. 661,329, dated November e,1eoo. Application filed August 18, 1900- Sezial No. 27,257. (No modeLlT0 (tZZ whom it may concern:

Be it known that I, ROBERT THOMPSON, a citizen of the United States ofAmerica, and a resident of I-Iolyoke, in the county of Hampden and Stateof Massachusetts, have invented certain new and useful Improvements inPacking-Boxes, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in packing-boxes and clamps orretainers therefor, the objects being to provide simplified and improvedmeans for setting up the packing as occasion requires, to provideagainst the accidental displacement or loss of the packing-gland, and topermit readily the removal, if desired, of the gland for renewing thepacking.

The invention consists in the constructions and combinations of parts,all substantially as hereinafter described, and set forth in the claims.

Reference is to be had to the accompanying drawings, in which theimproved device is illustrated, and in which Figure is a plan view. Fig.2 is a central vertical sectional view on line 2 2, Fig. 1.

In the drawings, A represents the body, through which the shaft orpiston-rod B plays or has its bearing, said part B constituting,

.for example, the head of a steam-cylinder or of a pump.

The body A is constructed with the concentric annular seat a at the baseof the annular depression I), in which is placed the packing d, of anysuitable compressible material, the same, however, not filling the an- Inular depression-spacel v 0 represents the gland, having at its upperend the surrounding flange g.

D represents a clamp and easing, the same consisting of the two matchingor duplicated half-cylindrical shells or castings h h, with oppositepairs of ear-lugs i t' for the engagement therethrongh and therewith ofthe clamping-boltsjj and nuts j j and having comparativelynarrowinternal flangem to engage under the flange of the body A and thewider internal upper or opposite end flange n to embrace the piston-rodor shaft.

It will be noted that the axial length of the gland is greater than thedistance from the upper end of the body A to the inner wall of theflange n, so that same lower end portion of the gland must necessarilybe sunk within the month of the depression.

Setting-up screws 0 0 are provided and passed, with a thread engagement,through the upper flanged portions 91, of the separable clamp-casing Dto a forcing and retaining bearing against the upper flanged end of thegland. These screws provide the means for forcing the gland in aneudwise direction against the packing as occasion may require.

It will be perceived that with theinclosing clamp in place about thegland, the end of which latter is sunk within the depression I), thegland cannot become entirely disengaged from the body A, having suchdepression, no matter to What extent the screw 0 may become loosened,and yet to replace the packing, necessitating the removal of the gland,such may be done by the easilyaccomplished removal of the separable clamping-case D. The casing conceals and protects the gland and measurablyexcludes dirt from the bearing.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. The combination with the cylinder head or body, through which thepiston-rod or shaft works, provided with the flange g, and having anendwise open annular packingdepression, of the annular gland, the endportion of which is entered in said depression, the clamping-casingconsisting of separable semicylindrical sections, 71 h, with theinternal flanges m n the former to engage under said flange g and thelatter to embrace the shaft outside of the gland, means of detachableconnection for said clamp-sections, and the settingup screws passing theclamp -seclion flanges a to bearing against the end of the gland,substantially as and for the purposes set forth.

2. The combination with the body A, comprising a pump or cylinder head,or the like and having the flange g, and the annular depression forpacking, of the annular gland O the end of which enters said depression,the clamp D comprising the paired semicylin-- drical sections h ithaving the matching earlugs t '1), and the inturned semi-annular flangesthe gland, the bolts j and nuts j engaged Signed by me at Springfield,Massachusetts, in presence of two subscribing Witnesses.

ROBERT THOMPSON,

m and 'n, the distance between the inner faces of said flanges beingless than the length of through, and With, said ear-lugs 2', and thesetting-up screws 0 0, threading through the Witnessesi clamp-sectionflanges against the outer end WM. S. BELLOWS, of the gland. E. M.KNIGHT.

